From cb1fcf3d50d0c2cab2e09bf7d6b9f32f92bc52ee Mon Sep 17 00:00:00 2001 From: Bernhard Bablok Date: Wed, 28 May 2025 11:06:22 +0200 Subject: [PATCH] fix deque implementation from upstream --- py/objdeque.c | 2 +- tests/basics/deque2.py | 10 ++++++++++ 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/py/objdeque.c b/py/objdeque.c index 583537017fdb2..89c57668e45d5 100644 --- a/py/objdeque.c +++ b/py/objdeque.c @@ -208,7 +208,7 @@ static mp_obj_t deque_subscr(mp_obj_t self_in, mp_obj_t index, mp_obj_t value) { size_t offset = mp_get_index(self->base.type, deque_len(self), index, false); size_t index_val = self->i_get + offset; - if (index_val > self->alloc) { + if (index_val >= self->alloc) { index_val -= self->alloc; } diff --git a/tests/basics/deque2.py b/tests/basics/deque2.py index 3552d5be37abe..ebc0872c7b4e0 100644 --- a/tests/basics/deque2.py +++ b/tests/basics/deque2.py @@ -31,6 +31,16 @@ d[3] = 5 print(d[3]) +# Access the last element via index, when the last element is at various locations +d = deque((), 2) +for i in range(4): + d.append(i) + print(i, d[-1]) + +# Write the last element then access all elements from the end +d[-1] = 4 +print(d[-2], d[-1]) + # Accessing indices out of bounds raises IndexError try: d[4] pFad - Phonifier reborn

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